• Network/ Systems Administrator

    Argonne National Laboratory (Lemont, IL)
    Argonne has an opportunity to serve as the System Administrator of the classified National Security Systems (NSS) for the Security Programs Facility (SPF). ... related applications. Design, configure, implement, and maintain the secure operating systems , networks, and applications for the SPF classified NSS. **Position… more
    Argonne National Laboratory (11/22/25)
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  • NIPRNet / SIPRNet Administrator

    Applied Research Associates, Inc. (Eglin AFB, FL)
    …required for secure SIPRNet operations. This role works directly with the Sr. Systems Administrator and the broader systems ‑admin team leading engineering ... administrator for a SIPRNet capability supporting a DoD‑owned secret ‑level enclave that already houses an air‑gapped software‑development environment. The… more
    Applied Research Associates, Inc. (11/21/25)
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  • TSSCI Systems Administrator (Level…

    Insight Global (Louisville, CO)
    Job Description An aerospace company in Louisville, CO, is looking for a Top Secret Systems Administrator (Level 2) to join their growing classified IT team. ... administration 1- years of experience support RHEL and Windows operating systems Well versed with Active...of experience support RHEL and Windows operating systems Well versed with Active Directory Experience supporting virtualization… more
    Insight Global (11/22/25)
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  • Secret System Admin

    Insight Global (Camp Lejeune, NC)
    Job Description Insight Global is looking for a System Administrator to join one fo our clients at Camp Lejeune, NC. They will be responsible for administration, ... protocols * Experience with Windows Servers 2016/2019 and Active Directory * Windows desktop operating systems (WIN10 SHB) * Experience with Microsoft WSUS… more
    Insight Global (01/06/26)
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  • Ncis SQL Database Administrator | Active TS…

    General Dynamics Information Technology (Quantico, VA)
    …customer's COTS applications. You will also be part of a team of systems administrators managing Windows Server 2016-2019, desktops, and printers. In addition: ... Requisition:** Regular **Clearance Level Must Be Able to Obtain:** Top Secret /SCI **Public Trust/Other Required:** None **Job Family:** IT Infrastructure and… more
    General Dynamics Information Technology (12/19/25)
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  • Mid-Level Tier III Onsite Support…

    General Dynamics Information Technology (Tampa, FL)
    …Required:** Yes **Job Description:** **GDIT is seeking a mid-level Onsite Support Administrator to provide support to Defense Information Systems Agency (DISA) ... Administrator must have:** **Clearance:** **Minimum of an active Secret security clearance required.** **Education:** **Bachelor's Degree in a related technical… more
    General Dynamics Information Technology (01/14/26)
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  • MSIC - HPC Linux Systems

    COLSA Corporation (Huntsville, AL)
    Join our team as a Linux Systems Administrator , where you will support and manage a diverse mix of workstations, servers, and high-performance computing (HPC) ... including firewalls and SELinux. + Work with Ansible for system configuration and automation. + Deploy and manage containerized...12 years of related experience + Active DoD Top Secret Clearance with SCI eligibility + Must be able… more
    COLSA Corporation (12/31/25)
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  • Senior VMware Administrator | Active TS/SCI…

    General Dynamics Information Technology (Quantico, VA)
    …VMWare Administrator ** must have: + **Security Clearance Level:** Active Secret clearance (Must be TS/SCI eligible) + **Required Experience:** + 8+ years ... Regular **Clearance Level Must Be Able to Obtain:** Top Secret /SCI **Public Trust/Other Required:** None **Job Family:** IT Infrastructure...of experience with systems administration + DoD system accreditation process… more
    General Dynamics Information Technology (01/05/26)
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  • Systems Administrator Expert

    General Dynamics Information Technology (Annapolis Junction, MD)
    …process. Configures and manages UNIX, Linux and Windows operating systems and installs/loads operating system software, troubleshoots, maintains integrity ... and manage UNIX, Linux and Windows (or other applicable) operating systems and installs/loads operating system software, troubleshoot, maintain integrity of… more
    General Dynamics Information Technology (11/08/25)
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  • Virtual Platform Administrator - REMOTE

    TekSynap (VA)
    …Cloud Operations + Red Hat Certified Engineer (RHCE) + Red Hat Certified System Administrator (RHCSA) **Desired Experience and Skills** + Extensive knowledge of ... deployment, security, and administration of commercial cloud provider (CCP) solutions, including Windows and RHEL operating systems . + Manage enterprise database… more
    TekSynap (11/08/25)
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